CN216720210U

CN216720210U - Energy storage system

Info

Publication number: CN216720210U
Application number: CN202220281281.2U
Authority: CN
Inventors: 王学辉; 高雄伟; 陈小波
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2022-02-11
Filing date: 2022-02-11
Publication date: 2022-06-10
Anticipated expiration: 2032-02-11
Also published as: WO2023151495A1

Abstract

The application relates to an energy storage system, which comprises a shell, a detection piece, an air inlet machine and an air outlet machine. A shell, which is provided with an air inlet and an air outlet; the detection piece is matched and connected with the shell and used for detecting the concentration of combustible gas in the shell; the air inlet machine and the air outlet machine are both connected with the shell; the air inlet machine is used for driving external airflow to flow into the shell through the air inlet, and the air outlet machine is used for driving the internal airflow to flow out to the outside through the air outlet; the air inlet machine and the air outlet machine are both configured to be started when the concentration of the combustible gas is equal to or larger than the minimum value of the set range. The application provides an energy storage system can promote combustible gas's discharge efficiency.

Description

Energy storage system

Technical Field

The application relates to the technical field of batteries, in particular to an energy storage system.

Background

Currently, with the development of social economy, an energy storage system formed by a housing and a plurality of battery modules accommodated in the housing has been widely applied to electric vehicles, military equipment and aerospace equipment.

When battery module thermal runaway, for preventing that combustible gas from gathering in the casing and exploding, need carry out real time monitoring to the combustible gas's in the casing concentration to in time discharge combustible gas outside the casing when the combustible gas's in the casing concentration reaches the settlement concentration.

However, in the conventional energy storage system, when the battery module is out of control due to heat, the discharge efficiency of the combustible gas in the housing is low, and thus the energy storage system still has the risk of explosion.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide an energy storage system capable of improving the discharge efficiency of the combustible gas, in order to solve the above problem of the low discharge efficiency of the combustible gas.

An energy storage system, comprising:

the shell is provided with an air inlet and an air outlet;

the detection piece is matched and connected with the shell and used for detecting the concentration of combustible gas in the shell; and

the air inlet machine and the air outlet machine are both connected with the shell; the air inlet machine is used for driving external airflow to flow into the shell through the air inlet, and the air outlet machine is used for driving the airflow in the shell to flow out to the outside through the air outlet;

the air inlet machine and the air outlet machine are both configured to be started when the concentration of the combustible gas is equal to or larger than the minimum value of a set range.

Above-mentioned energy storage system, at the in-process of energy storage system energy supply, the concentration of combustible gas in the real-time detection casing of detection piece, and when combustible gas's concentration equals or is greater than the minimum of settlement scope, air inlet machine and play fan all start, and the air inlet machine can drive outside air current and flow into to the casing in, goes out air current and combustible gas discharge to outside in the fan guidable casing. Due to the arrangement of the air inlet machine and the air outlet machine, the discharge of combustible gas in the shell can be accelerated, so that the combustible gas has higher discharge efficiency.

In one embodiment, the energy storage system comprises a controller, and the controller is configured to control the air inlet fan and the air outlet fan to start when the concentration of the combustible gas is equal to or greater than the minimum value of the set range.

In the embodiment, due to the arrangement of the controller, the working process of the whole energy storage system does not need to be monitored manually, so that the explosion-proof automation of the energy storage system is favorably realized.

In one embodiment, the energy storage system includes a fire suppression element coupled to the housing and electrically connected to the controller;

wherein the controller is configured to control the fire extinguishing member to perform a fire extinguishing operation within the housing when the concentration of the combustible gas is greater than a maximum value of the set range.

When the battery module in the housing is out of control thermally, the concentration of the combustible gas in the housing may be greater than the maximum value of the set range, and thus, the battery module may explode and burn easily. And through setting up the controller control piece of putting out a fire to putting out a fire the operation in the casing, can effectively and in time control the intensity of a fire in the casing and reduce the temperature in the casing to can prevent that the intensity of a fire from spreading and causing serious incident.

In one embodiment, the housing further includes an opening and closing door disposed at the air inlet and/or the air outlet, and the opening and closing door is configured to open the corresponding air inlet and/or the corresponding air outlet when the concentration of the combustible gas is equal to or greater than the minimum value of the set range.

When the energy storage system normally supplies power, all the opening and closing doors are closed, and all the opening and closing doors prevent external water vapor, dust and the like from entering the shell together so as to avoid the water vapor and the dust from influencing the work of the battery module. When the concentration of the combustible gas in the shell is equal to or larger than the minimum value of the set range, all the opening and closing doors are opened to ensure that the interior of the shell can exchange air flow with the exterior. Therefore, the opening and closing door is opened or closed timely according to the concentration of combustible gas in the shell, so that the energy storage system can be normally powered and can exchange airflow with the outside.

In one embodiment, the energy storage system further includes a sealing member, and the sealing member is disposed at an outer periphery of the air inlet and/or the air outlet having the opening/closing door, and is sealed between the opening/closing door and the housing at the air inlet and/or the air outlet where the opening/closing door is located when the concentration of the combustible gas is smaller than the minimum value of the set range.

When the energy storage system supplies power normally, the concentration of combustible gas in the shell is smaller than the minimum value of the set range, and the shell covers between the opening and closing door at the air inlet and the shell and/or between the opening and closing door at the air outlet and the shell and is sealed through a sealing element, so that external water vapor and dust are prevented from entering. When the concentration of combustible gas in the shell is equal to or greater than the maximum value of the set range, all the opening and closing doors are opened, and the sealing effect of the sealing element fails.

In one embodiment, the surface of the shell is provided with a slot, and the slot is arranged on the periphery of the sealing element; the opening and closing door comprises a door main body and a flange which is formed on one side of the door main body in a protruding mode, and the flange is clamped and embedded in the corresponding slot when the opening and closing door is closed relative to the air inlet or the air outlet where the opening and closing door is located at present.

The matching of the flanging and the slot can further improve the matching tightness between the opening and closing door where the flanging is located and the shell, so that the sealing element corresponding to the opening and closing door can be reliably clamped between the door main body of the opening and closing door and the shell.

In one embodiment, the depth of the slot is greater than the width of the corresponding flange.

Therefore, when each opening and closing door closes the corresponding air inlet or air outlet, the flanging in the opening and closing door can be completely inserted into the corresponding slot. Therefore, the matching between the flanging and the slot is firmer, and the flanging can be prevented from exiting the corresponding slot.

In one embodiment, an insulating layer is laid on the surface, facing the air inlet or the air outlet, of each opening and closing door.

The setting of heat preservation for the rate that the heat in the casing was diffused to the outside by every door that opens and shuts becomes extremely slow, consequently, can maintain comparatively suitable temperature in the casing so that battery module can normally supply power.

In one embodiment, the door further comprises a magnetic attraction piece, and the opening and closing door is configured to be attracted to the shell under the action of the magnetic attraction piece corresponding to the opening and closing door.

Therefore, each opening and closing door can stably close the air inlet or the air outlet.

In one embodiment, the shell comprises a shell main body, a partition plate, an air outlet pipe and a blocking door, wherein the partition plate partitions the shell main body into an electric bin and a battery bin;

the partition plate is provided with a communication port, the air outlet pipe sequentially penetrates through the communication port, the electric bin and the air outlet and is communicated with the battery bin and the outside, and the blocking door is matched and connected with the partition plate and used for opening and closing the communication port.

Specifically, the shell main body is provided with a containing bin, and the partition plate is located in the containing bin and divides the containing bin into an electric bin and a battery bin. The detection piece is used for detecting the concentration of combustible gas in the battery compartment, and the controller is used for blocking the opening and closing of the door. When the concentration of the combustible gas in the battery compartment is smaller than the minimum value of the set range, the controller controls the blocking door to be closed, the electric compartment and the battery compartment are isolated from each other, the battery module is located in the battery compartment to supply power, the electric element is located in the electric compartment to work, and the battery module and the electric element are not influenced with each other. When the concentration of the combustible gas in the battery compartment is equal to or greater than the minimum value of the set range, the controller controls the blocking door to be opened, so that the concentration of the combustible gas in the battery compartment can be discharged to the outside through the air outlet pipe and the air outlet.

Drawings

FIG. 1 is a schematic structural diagram of an energy storage system with a coating layer coated on a frame removed according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a battery module in the energy storage system shown in fig. 1;

fig. 3 is a front sectional view of the energy storage system shown in fig. 1, in which a shell main body, a partition plate, an air outlet pipe, an air outlet machine and an opening and closing door are matched;

fig. 4 is an exploded view of the energy storage system shown in fig. 1, in which a shell main body, a partition plate, an air outlet pipe, an air outlet machine and an opening and closing door are matched;

fig. 5 is a schematic structural view of the energy storage system shown in fig. 1, illustrating the matching of the shell main body, the sealing member, the air inlet fan and the opening and closing door;

FIG. 6 is a cross-sectional view of the energy storage system of FIG. 5 taken along direction A-A;

fig. 7 is an enlarged schematic view of a partial structure B in the energy storage system shown in fig. 6.

Reference numerals:

1. an energy storage system; 10. a housing; 11. a housing main body; 111. a storage bin; 112. an air inlet; 113. an air outlet; 114. a slot; 115. an electric bin; 116. a battery compartment; 117. a frame body; 12. opening and closing the door; 121. a door main body; 122. flanging; 123. a heat-insulating layer; 13. a partition plate; 131. a communication port; 14. an air outlet pipe; 15. a blocking gate; 20. an air inlet machine; 30. an air outlet machine; 40. a controller; 50. a seal member; 51. a notch; 60. a magnetic member; 70. a battery module; 71. a battery cell; 72. a box body; 721. a first portion; 722. a second portion.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are for purposes of illustration only and do not denote a single embodiment.

Referring to fig. 1, in view of the development of market situation, an energy storage system 1 capable of storing and supplying electric energy is more widely used. The energy storage system 1 is not only applied to energy storage devices such as hydraulic power, fire power, wind power and solar power stations, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles and electric automobiles, and a plurality of fields such as military equipment and aerospace. As the application field of the energy storage system 1 is continuously expanded, the market demand thereof is continuously expanded.

Referring to fig. 2, the energy storage system 1 generally includes a housing 10 and a plurality of battery modules 70, and all the battery modules 70 are disposed in the housing 10 and used for storing and supplying electric energy. Each battery module 70 includes a battery cell 71 and a case 72, and the battery cell 71 is accommodated in the case 72. The box 72 is used to provide a receiving space for the battery cell 71, and the box 72 may have various structures. In some embodiments, the case 72 may include a first portion 721 and a second portion 722, the first portion 721 and the second portion 722 cover each other, and the first portion 721 and the second portion 722 jointly define a receiving space for receiving the battery cell 71. The second part 722 may be a hollow structure with an open end, the first part 721 may be a plate-shaped structure, and the first part 721 covers the open side of the second part 722, so that the first part 721 and the second part 722 define an accommodating space together; the first part 721 and the second part 722 may be both hollow structures with one side open, and the open side of the first part 721 is covered on the open side of the second part 722. Of course, the case 72 formed by the first portion 721 and the second portion 722 may have various shapes, such as a cylinder, a rectangular parallelepiped, and the like.

As a single or a plurality of battery modules 70 operate for a long time, thermal runaway easily occurs in the operating battery modules 70. In case of thermal runaway, combustible gases (H2, CO, CH4, etc.) accumulate in the housing 10 to explode, thereby causing serious safety accidents. Therefore, it is important to design the energy storage system 1 to be explosion-proof.

It is known that the conventional explosion-proof method is to arrange an exhaust fan and a collection member in the housing 10, and the collection member and the exhaust fan are electrically connected to an external terminal. Gather the piece and gather the combustible gas's in the casing 10 concentration and feed back to external terminal, and when the concentration that gathers was equal to or was greater than the settlement threshold value, the work of the steerable exhaust fan of external terminal to the inside outflow of drive outside air current through casing 10. This enhances convection of air from the outside to the inside of the housing 10, thereby contributing to a reduction in the concentration of combustible gas inside the housing 10.

The inventor has noticed that when the battery module 70 is out of control due to heat, the flow guiding effect of a single exhaust fan is weaker when the conventional mode of exhausting the combustible gas in the housing 10 through the exhaust fan and the collecting member is adopted, so that the exhausting efficiency of the combustible gas is lower, and the energy storage system 1 still has the risk of explosion.

Referring to fig. 3, fig. 4 and fig. 5 together, in order to reduce the explosion-proof risk of the energy storage system 1, the inventors have found through careful research that a wind inlet machine 20 and a wind outlet machine 30 may be disposed on the housing 10 in a matching manner, and a detection element is disposed on the housing 10, and the detection element detects the concentration of the combustible gas in the housing 10 in real time, and when the concentration of the combustible gas is equal to or greater than the minimum value of the set range, the wind inlet machine 20 is used to drive the external airflow to flow into the housing 10, and the wind outlet machine 30 is used to drive the airflow in the housing 10 to flow out to the outside. Under the synergistic action of the air inlet machine 20 and the air outlet machine 30, the external air flow can be efficiently driven and flows into the shell 10, and the air flow inside the shell 10 can also quickly flow out to the outside, so that the explosion-proof risk of the whole energy storage system 1 is sharply reduced.

Under the background that the safety requirement on the energy storage system 1 is increasing, the energy storage system 1 in this application can timely and efficiently discharge the combustible gas in the shell 10 when the combustible gas in the shell 10 exceeds the standard, and this has very important meaning in the battery field.

Specifically, the setting range can be set as required, and it is only necessary to ensure that thermal runaway does not occur in the energy storage system 1 when the concentration of the combustible gas is smaller than the minimum value of the setting range.

The energy storage system 1 that provides in this application includes a plurality of battery module 70, casing 10, detects the piece, air inlet machine 20 and goes out fan 30, has seted up air intake 112 and air outlet 113 on the casing 10, and all battery modules 70 are located in the casing 10, and detect the piece, air inlet machine 20 and go out fan 30 and all connect in casing 10. The detection component is used for detecting the concentration of the combustible gas in the housing 10, the air inlet fan 20 is used for driving external air to flow into the housing 10 through the air inlet 112, and the air outlet fan 30 is used for driving the air in the housing 10 to flow out to the outside through the air outlet 113. Wherein, the air inlet fan 20 and the air outlet fan 30 are both configured to start when the concentration of the combustible gas is equal to or greater than the minimum value of the set range.

In the energy supply process of the energy storage system 1, the detection component detects the concentration of the combustible gas in the shell 10 in real time, and when the concentration of the combustible gas is equal to or greater than the minimum value of the set range, both the air inlet machine 20 and the air outlet machine 30 are started, the air inlet machine 20 can drive external air flow to flow into the shell 10, and the air outlet machine 30 can guide the air flow and the combustible gas in the shell 10 to be discharged to the outside. Due to the arrangement of the air inlet machine 20 and the air outlet machine 30, the discharge of the combustible gas in the shell 10 can be accelerated, so that the combustible gas has higher discharge efficiency.

In an embodiment, the energy storage system 1 further includes a controller 40, and the controller 40 is configured to control the air inlet fan 20 and the air outlet fan 30 to start when the concentration of the combustible gas is equal to or greater than the minimum value of the set range. Specifically, the controller 40 is electrically connected with the detection piece, the air inlet machine 20 and the air outlet machine 30, the detection piece feeds back the detected concentration of the combustible gas to the controller 40 in real time, and when the concentration of the combustible gas fed back by the detection piece is equal to or greater than the minimum value of the set range, the controller 40 controls the air inlet machine 20 and the air outlet machine 30 to be started. Therefore, the external air flow can flow into the housing 10 through the air inlet 112 and bring the combustible gas in the housing 10 out to the outside. Thus, the concentration of the combustible gas in the housing 10 is reduced, so that the combustible gas can be prevented from accumulating in the housing 10 and exploding. In addition, heat within the housing 10 can also be removed during this process, thereby helping to prevent thermal runaway due to heat build-up within the housing 10. In this embodiment, due to the arrangement of the controller 40, the working process of the whole energy storage system 1 does not need to be monitored manually, thereby being beneficial to realizing the automation of explosion prevention of the energy storage system 1.

Of course, the control method of the air inlet fan 20 and the air outlet fan 30 is not limited to the above. In other embodiments, a display screen and control buttons may also be disposed on the housing 10, the display screen is electrically connected to the detecting element, and the control buttons are electrically connected to both the air inlet fan 20 and the air outlet fan 30. The combustible gas that the detecting element will detect shows on the display screen, and when the concentration of combustible gas was equal to or was greater than the minimum of settlement scope, the user pressed control button, then air inlet machine 20 and air outlet machine 30 all started.

Further, the energy storage system 1 includes a fire extinguishing member coupled to the housing 10 and electrically connected to the controller 40. Wherein the controller 40 is configured to control the fire extinguishing member to perform a fire extinguishing operation within the housing 10 when the concentration of the combustible gas is greater than the maximum value of the set range. Alternatively, the extinguishing member may be a sprinkler, a dry powder extinguisher, a foam extinguisher, or the like. When thermal runaway of the battery modules 70 occurs in the case 10, the concentration of the combustible gas in the case 10 may be greater than the maximum value of the set range, and thus, the battery modules 70 may be easily exploded and burned. The controller 40 is arranged to control the fire extinguishing member to extinguish the fire in the casing 10, so that the fire in the casing 10 can be effectively and timely controlled, the temperature in the casing 10 can be reduced, and serious safety accidents caused by the spread of the fire can be prevented.

In one implementation, the housing 10 further includes an opening and closing door 12 disposed at the air inlet 112 and/or the air outlet 113, and the opening and closing door 12 is configured to open the corresponding air inlet 112 and/or the air outlet 113 when the concentration of the combustible gas is equal to or greater than the minimum value of the set range. When the energy storage system 1 is normally powered, all the opening and closing doors 12 are closed, and all the opening and closing doors 12 prevent external water vapor, dust and the like from entering the casing 10 together, so that the water vapor and dust are prevented from affecting the work of the battery module 70. When the concentration of the combustible gas in the housing 10 is equal to or greater than the minimum value of the set range, all the open/close doors 12 are opened to ensure that the inside of the housing 10 can exchange gas flow with the outside. Therefore, the opening and closing door 12 is opened or closed timely according to the concentration of combustible gas in the shell 10, so that the energy storage system 1 can be normally powered and can exchange air flow with the outside.

Alternatively, there may be one opening and closing door 12, and the opening and closing door 12 is used for opening and closing the air inlet 112 or the air outlet 113. Preferably, there are two opening/closing doors 12, and the two opening/closing doors 12 are respectively disposed at the air inlet 112 and the air outlet 113. When the energy storage system 1 is normally powered, all the opening and closing doors 12 are closed, and a closed space for accommodating the battery module 70 is formed in the housing 10, so that external water vapor and dust are conveniently blocked outside the housing 10.

Referring to fig. 5 again, and referring to fig. 6 and fig. 7 together, further, the energy storage system 1 further includes a sealing element 50, where the sealing element 50 is disposed at an outer periphery of the air inlet 112 and/or the air outlet 113 having the opening/closing door 12, and is sealed between the opening/closing door 12 and the housing 10 on the air inlet 112 and/or the air outlet 113 where the combustible gas concentration is smaller than the minimum value of the set range. When the energy storage system 1 is normally powered, the concentration of the combustible gas in the housing 10 is smaller than the minimum value of the set range, and the sealing element 50 seals between the opening and closing door 12 covering the air inlet 112 and the housing 10 and/or between the opening and closing door 12 covering the air outlet 113 and the housing 10 to prevent external water vapor and dust from entering. When the concentration of combustible gas in the housing 10 is equal to or greater than the maximum value of the set range, all the opening and closing doors 12 are opened, and the sealing function of the sealing member 50 is disabled.

Alternatively, if only the inlet 112 or the outlet 113 is provided with the opening and closing door 12, the sealing member 50 is one and is disposed around the periphery of the inlet 112 or the outlet 113 provided with the opening and closing door 12. Preferably, the opening and closing doors 12 are disposed at the air inlet 112 and the air outlet 113, and two sealing members 50 are disposed and correspond to the two opening and closing doors 12 one by one, wherein one sealing member is disposed around the circumference of the air inlet 112, and the other sealing member is disposed around the circumference of the air outlet 113. When the concentration of the combustible gas in the housing 10 is smaller than the minimum value of the set range, the two opening and closing doors 12 respectively close the air inlet 112 and the air outlet 113, and each sealing member 50 is hermetically disposed between the corresponding opening and closing door 12 and the housing 10, so that the moisture and the dust can be completely isolated outside the housing 10.

Furthermore, the surface of the housing 10 is formed with a slot 114, and the slot 114 is disposed at the periphery of the sealing element 50 and extends along the periphery of the sealing element 50. The opening and closing door 12 includes a door body 121 and a flange 122 formed on one side of the door body 121, and the flange 122 is inserted into the corresponding slot 114 when the opening and closing door 12 is closed with respect to the current air inlet 112 or air outlet 113. Preferably, the periphery of each sealing element 50 is uniformly provided with a slot 114, and the opening and closing door 12 corresponding to each sealing element 50 is provided with a flange 122. The matching of the flange 122 and the slot 114 can further improve the tightness of the matching between the opening and closing door 12 where the flange 122 is located and the casing 10, so that the sealing element 50 corresponding to the opening and closing door 12 can be reliably clamped between the door main body 121 of the opening and closing door 12 and the casing 10.

It should be noted that, in order to reduce the possibility of the separation of the flanges 122 from the slots 114, when the flanges 122 are inserted into the corresponding slots 114, at least one side of the flanges 122 should be attached to the slot walls of the slots 114, so that the flanges 122 and the slot walls of the slots 114 have a larger contact area.

Further, the depth of the slot 114 is greater than the width of the corresponding flange 122. Therefore, when each opening and closing door 12 closes the corresponding air inlet 112 or air outlet 113, the flange 122 of the opening and closing door 12 can be completely inserted into the corresponding slot 114. Thus, the flange 122 is more firmly engaged with the slot 114, so as to prevent the flange 122 from being withdrawn from the corresponding slot 114.

In one embodiment, the radial width of the slot 114 is also greater than the thickness of the corresponding flange 122. Specifically, each of the flanges 122 has a first side surface and a second side surface opposite to each other in the thickness direction thereof, and the slot 114 has a first slot wall and a second slot wall arranged in the radial direction thereof, the first side surface being arranged toward the first slot wall, and the second side surface being arranged toward the second slot wall. When the flanges 122 corresponding to each slot 114 are inserted into the corresponding slot 114, the first side of the flange 122 can be attached to the first slot wall, and the second side are spaced apart. In such an embodiment, when rain weather is encountered, rainwater may flow out to the outside under the guidance of the gap between the second side surface and the second groove wall, so as to prevent rainwater from gathering in the slot 114 and penetrating into the housing 10.

In an embodiment, the energy storage system 1 further includes a magnetic attraction piece 60, and when the concentration of the combustible gas in the housing 10 is smaller than the minimum value of the set range, the opening and closing doors 12 are configured to be attracted to the housing 10 under the action of the magnetic attraction piece 60 corresponding thereto, so that each opening and closing door 12 can stably close the air inlet 112 or the air outlet 113. Alternatively, all of the opening and closing doors 12 may be configured to be attracted to the housing 10 by the magnetic attraction 60. Preferably, each of the opening and closing doors 12 has a corresponding magnetic attracting element 60, and each of the opening and closing doors 12 can be attracted to the housing 10 by the corresponding magnetic attracting element 60.

In one embodiment, each of the opening and closing doors 12 is a metal component, and each of the opening and closing doors 12 corresponds to a plurality of magnetically attracting elements 60 and is attracted to the housing 10 by all the magnetically attracting elements 60. Specifically, a plurality of notches 51 are formed in the sealing member 50 corresponding to each opening/closing door 12, all the magnetic attraction members 60 and all the notches 51 corresponding to the same opening/closing door 12 correspond to each other one by one, and each magnetic attraction member is coupled to the casing 10 and attracts the corresponding opening/closing door 12 through the corresponding notch 51.

In one embodiment, the surface of each opening and closing door 12 facing the air inlet 112 or the air outlet 113 is laid with an insulating layer 123. The insulating layer 123 is provided to make the rate of heat in the case 10 spreading to the outside from each opening and closing door 12 extremely slow, so that a proper temperature can be maintained in the case 10 to enable the battery module 70 to supply power normally.

Referring to fig. 1, fig. 3 and fig. 4 again, in an embodiment, the housing 10 includes a housing main body 11, a partition plate 13, an air outlet pipe 14 and a blocking door 15, wherein the partition plate 13 partitions the housing main body 11 into an electrical compartment 115 and a battery compartment 116. The battery compartment 116 is used to house the battery module 70, and the electrical compartment 115 is used to house electrical components other than the battery module 70, such as the controller 40, fire extinguishing members, and the like. The partition plate 13 is provided with a communication port 131, the air outlet pipe 14 sequentially penetrates through the communication port 131, the electrical cabin 115 and the air outlet 113, and is communicated with the battery cabin 116 and the outside, and the blocking door 15 is connected to the partition plate 13 in a matching manner and used for opening and closing the communication port 131.

Specifically, the housing body 11 has a housing chamber 111, and the partition plate 13 is located in the housing chamber 111 and partitions the housing chamber 111 into an electrical chamber 115 and a battery chamber 116. The detection component is used for detecting the concentration of combustible gas in the battery compartment 116, and the controller 40 is used for blocking the opening and closing of the door 15. When the concentration of the combustible gas in the battery compartment 116 is smaller than the minimum value of the set range, the controller 40 controls the blocking door 15 to close, the electrical compartment 115 and the battery compartment 116 are isolated from each other, the battery module 70 is located in the battery compartment 116 for supplying power, the electrical elements are located in the electrical compartment 115 for working, and the battery module 70 and the electrical elements are not influenced by each other. When the concentration of the combustible gas in the battery compartment 116 is equal to or greater than the minimum value of the set range, the controller 40 controls the blocking door 15 to open, so that the concentration of the combustible gas in the battery compartment 116 can be discharged to the outside through the air outlet pipe 14 and the air outlet 113.

Specifically, the housing body 11 has a hollow structure, and may be enclosed by a top plate, a bottom plate, and a side plate connected between the top plate and the bottom plate. Alternatively, the case body 11 may be surrounded by a frame 117 and a cover layer covering the frame 117.

Above-mentioned energy storage system 1, at the in-process of energy supply of energy storage system 1, the concentration of combustible gas in real-time detection casing 10 is detected to the detection piece, and when the concentration of combustible gas equals or is greater than the minimum of settlement scope, air inlet machine 20 and air-out machine 30 all start, and air inlet machine 20 can drive in the outside air current flows into casing 10, and air-out machine 30 can guide the air current and the combustible gas discharge in the casing 10 to the outside. Due to the arrangement of the air inlet machine 20 and the air outlet machine 30, the discharge of the combustible gas in the shell 10 can be accelerated, so that the combustible gas has higher discharge efficiency.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An energy storage system (1), comprising:

a shell (10) which is provided with an air inlet (112) and an air outlet (113);

the detection piece is connected to the shell (10) in a matching mode and is used for detecting the concentration of the combustible gas in the shell (10); and

the air inlet machine (20) and the air outlet machine (30) are both connected with the shell (10); the air inlet machine (20) is used for driving external air to flow into the shell (10) through the air inlet (112), and the air outlet machine (30) is used for driving air flow in the shell (10) to flow out to the outside through the air outlet (113);

wherein, the air inlet machine (20) and the air outlet machine (30) are both configured to be started when the concentration of the combustible gas is equal to or greater than the minimum value of a set range.

2. The energy storage system (1) according to claim 1, wherein the energy storage system (1) comprises a controller (40), and the controller (40) is configured to control the air inlet fan (20) and the air outlet fan (30) to be started when the concentration of the combustible gas is equal to or greater than the minimum value of the set range.

3. The energy storage system (1) of claim 2, wherein the energy storage system (1) comprises a fire extinguishing member coupled to the housing (10) and electrically connected to the controller (40);

wherein the controller (40) is configured to control the fire extinguishing member to perform a fire extinguishing operation within the housing (10) when the concentration of the combustible gas is greater than the maximum value of the set range.

4. The energy storage system (1) according to claim 1, wherein the housing (10) further comprises an opening and closing door (12) provided at the intake port (112) and/or the outtake port (113), the opening and closing door (12) being configured to open the corresponding intake port (112) and/or outtake port (113) when the concentration of the combustible gas is equal to or greater than a minimum value of the set range.

5. The energy storage system (1) according to claim 4, wherein the energy storage system (1) further comprises a sealing member (50), and the sealing member (50) is disposed at the periphery of the air inlet (112) and/or the air outlet (113) with the opening/closing door (12), and seals between the opening/closing door (12) and the housing (10) on the air inlet (112) and/or the air outlet (113) when the concentration of the combustible gas is smaller than the minimum value of the set range.

6. The energy storage system (1) according to claim 5, wherein a slot (114) is formed in the surface of the housing (10), and the slot (114) is arranged on the periphery of the sealing element (50); the opening and closing door (12) comprises a door main body (121) and a flange (122) which protrudes from one side of the door main body (121), and the flange (122) is clamped and embedded in the corresponding slot (114) when the opening and closing door (12) is closed relative to the air inlet (112) or the air outlet (113) where the opening and closing door is located.

7. Energy storage system (1) according to claim 6, characterized in that the depth of the slot (114) is greater than the width of the flange (122) corresponding thereto.

8. Energy storage system (1) according to claim 4, characterized in that the surface of each opening and closing door (12) facing the air inlet (112) or the air outlet (113) is provided with an insulating layer (123).

9. Energy storage system (1) according to claim 4, characterized in that it further comprises a magnetically attractive element (60), said shutter door (12) being configured to be attracted to said casing (10) under the action of said magnetically attractive element (60) corresponding thereto.

10. The energy storage system (1) according to claim 1, wherein the housing (10) comprises a housing main body (11), a partition plate (13), an air outlet pipe (14) and a blocking door (15), and the partition plate (13) partitions the housing main body (11) into an electrical bin (115) and a battery bin (116);

the separating plate (13) is provided with a communication port (131), the air outlet pipe (14) sequentially penetrates through the communication port (131), the electric bin (115) and the air outlet (113) and is communicated with the battery bin (116) and the outside, and the blocking door (15) is connected with the separating plate (13) in a matching mode and used for opening and closing the communication port (131).